Gas and coke kiln



(No Model.) 2 Sheets-Sheet 1.

"H. H! HALL.

GAS ANDGOKE KILN.

No. 287.433. lll Patented 001;. 30, 1883,.

ATTORNEYS.

UNITED STATES PATENT Orrica HAYDEN H. HALL, OF NEW HAMBURG, NEW YORK.

GAS AND COKE KILN.

sPEcIFIcATIoN forming percer Letters Patent No. 287,433, aerea oeteber 3o, 1883.

Application filed January 24, 1883. (No model.)

To all whom it may concern,.-

Beit known that I, HAYDEN H. HALL, of New Hamburg, in the county of Dutchess and. State of New York, have invented a new and Improved Gas and Coke Kiln, of which the following is a full, clear, and exact description.

My invention relates, principally, to apparatus or plant for the production of gas from Io coal, the structure and adaptation of parts bcing such as shall secure more economical working and better results as regards the quantity and quality of the gases generated and the quality ofthe coke produced, the whole plant `I5 being specially constructed with a view to such perfect control in operation as shall insure its durability in long-continued service.

The invention consists in a kiln open at the top, for charging and lighting thereat, and

2o having a removable cover, and also ablast and= exhaust pipe or flue traversing it at the line of the base, floor, or grate of the charge-receiving chamber, another chamber beingprovided below the charging-chamber, to receive 2 5 the coke of each charge by the fall of the sectional floor or grate at the sides of the blastpipe. v

rlhe invention further consists in special constructions of the blast or exhaust pipe in 3o pyramidal cross-sectionalform, and withhigherr and lower rows ofexhaust-apertures controlledby independently-working dampers, and protected by'overhanging plates or hoods from the drip of the residual tar from the coal. The ,35 exhaust-pipe is suitably valved at the gasdischarge end, and fitted with a movable head at the opposite end, having telescopic connection with the valved outlet of a blowing-enginel or steam-blast, for a controllable blast- 4o supply and for a means of cleaning the blastpipe, which communicates with suitable gasreceivers for storing the gases or conveying -them for use.

Theinvention further consists in the arrange- 4 5 ment, within the walls of the charge-receiving chamber fitted with a removable cover, and for charging and firing the charge from the top of thegkilu, of pipes tted with nozzles for ejecting superheated steam into the charged coal during 5o the coal-gas generating process, for-increasing the downward draft and producing hydrogen and positioned apex uppermost, to offer little in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a vertical sectional elevation of 6o my improved gas and coke kiln with the cover partly raised, the section being on line x x w, Fig. 3. Y Fig. 2 is a cross-section of the blast or exhaust pipe in larger size. Fig. 3 is a plan view of the kiln with the cover removed, and Fig. 4 is a partial side elevation of the exhaustpipe on the scale of Fig. 2.

A represents thewall ofthe kiln, here shown as built up in circular form of about .ten feet interior diameter.

B isthe blast or exhaust pipe of the kiln, supported at the ends in the wall A, and by oneror more pillars, C, the bottom plate, b, of the pipe B having hook projections c cast on or secured thereto at intervals for support of 75 the oor or grate sections D D, along the pipe B, by the frame-bars d of the sections resting in the hooks c, the iioor or grate sections being held up about level by the pins E, tted to slide in the kiln-walls beneath the outer 8o frame bars or edges, d,of sections D D', to support them, as in Fig. 3, or to be withdrawn to permit the sections to fall or swing downward on the hooks c, as in dotted lines, Fig. 2, to empty the coke from the upper chargingchamber, F, to the lower cooling-chamber, G, to be removed through doors suitably ftted'at H in the wall of the kiln, the open top of which is fitted to receive the removable cover I, to be lifted by suitable chain or other connec- 9o tions, e', for charging chamber F with coal.

I make the -exhaust-pipe B, in angular or pyramidal cross-section, of the bottom plate, b, and side plates, b', suitably bolted together or no obstruction to the downward working ofthe fire, to the last of the charge at the bottom of chamber F, and facilitate the-discharge ofthe coke therefrom when the floor-sections D D are dropped. The side plates, b', are cast or formed with the row of apertures b2 toward the top of the pipe B, controlled by connected slid'e or other dampers c?, one or more rows of apertures, b, being provided below apertures Y b, and controlled by connected slide or other dampers, c, overhanging plates or hoods b4 being cast on or fitted to side plates, b, to prevent obstruction of the dampers by the dripping residual -tar and other matters from the coalcharge above. The dampers c2 c:i are fitted to the inside of the exhaust-pipe B, for protection from the furnace-charge and for unobstructed working by their rods 0*, which connect the dampers of each row of apertures in the pipe B, and pass outside of the kiln to be worked for partially or wholly closing either row of apertures b2 b3 independently of the other rows for tempering the exhaust to the downwardly-working fire in chamber F, and to prevent overheating of the exhaust-pipe B, in which is iitted at the gas-discharge end the hinged valve J, to be closed when the charge of coke is about to be dropped, to seal the exhaust-pipe against escape of gases from, the receiver K, from which they may beLconveyed for use through a channel or conduit, L, with which any desired number of the kilns A may connect. At the opposite end the pipe B is fitted with a flanged head, e, having a pipe or nozzle, c', telescoping with the discharge-pipe el2 of a blowin gen gine or steam-blast apparatus, 3

stantially as herein shown and described,with

which is suitably valved to regulate the pressure as desired. This construction permits the head e to slide back for access to the interior of pipe B, for cleaning it when necessary.

M represents a pipe for conveying steam from any source to the coking charge through the connected nozzles m, the pipe being preferably embedded in the walls of the kiln for highly superheating the steam prior to its discharge into chamber F, for more ei'ective exhaust, and for decomposition therein for generating hydrogen gases to mingle with the gaseous products from the coal for increased heating effect of the gases in metallurgical furnaces which may connect with the kilns for a gaseous-fuel supply.

In operation, the cover I is lifted and chamber F charged with coal, which rests on the level bottom or grate D D and the exhaustpipe B, the cover I being lowered and tampjointed, and the lower doors at H being properly closed. The exhausting action of pipe B continuously draws the fire downward in the kiln, liberating the gases from the coal and carrying them to the receiver and conduit K L. As the re reaches and lpasses pipe M, the superheated steam discharged therefrom acts to increase the power of the exhaust, and the steam being decomposed, hydrogen gases are generated and intermingled with the coal gases, as above described. The residual tar from the coal-charge descends to and through the floor D D into the. cooling-pit below, and as the fire descends to the apex of the exhaustpipe the upper dampers, c2, are gradually closed, and the lower rows of dampers, c, as the fire descends, are likewise operated for valve J closed, when the charge of coke may be emptied into the cooling-chamber G by ,withdrawing the pins E, and permitting the grate-sections D D to drop either simultaneously or one at a time, as desired, and while the coke is being removed from chamber G the upper chamber, F, may be recharged with coal, thus permitting the nearly continuous working of the plant,'which produces gases of high caloriic value and a coke of even and desirable quality.

The-110er or bottom D D may consist of a single section at each side of the blast-pipe,

orbe formed thereat in more than three sections, as desired; but the construction shown is preferred, and the use of the steam-discharge pipe M is not necessary to the successful working of the apparatus, but the acceleration of the downward blast or exhaust thereby is a desirable feature.

Having thus Vdescribed my invention, I claim as new and desire to secure by Letters Patent- 1. A gas and coke kiln constructed, suban open top fitted witharcmovable cover and a blast or exhaust pipe, and dumping grate or iloor sections formingthe floor of the charging-chamber, as set forth. f

2. A gas and coke kiln constructed with an IOO open top tted witha removable cover, aoor for the charging-chamber formed by a blast or exhaust pipe and adjacent dumping sections, and a coke receiving and cooling chamber 1o- .cated beneath the charging-chamber, substantially as shown and described.

3. In gas and coke producing apparatus, an open-toppedkilnitted with axremovablecover, and a charging-chamber oor formed of an apertured blast or exhaust pipe and adjacent dumping sections, a controllablablast-inlet to the exhaust-pipe, and a valved outlet to a gas receiver or conduit, all combined and arranged for joint operation, substantially as shown and described.

4. The combination,with the kiln A, .of the exhaust-pipe B, having hookA projections c,

the grate or oor sections D D', and the pins E, substantially as shown and described.

5. The exhaust-pipe B, constructed with upper and lower rows of apertures, b2 b, controlled by independently -working rows of dampers c 6*, substantially as shown and described.

6. The combination, with the pipe B, apertured at b2 ba, and the ,dempers c2 c, of the hoods b, substantially as shown and described.

7. The combination,with the pipe B, of the discharge-pipe e2 of a blast apparatus, and a ianged head, e, fitted over one end of the pipe B, and providedwith a nozzle, e', telescoping IIO with the discharge-pipe e2 of the blast appahansb-pipe B, of the stea1n-jet pipe M, subratus, substantially as described, whereby the stantally as shown and described. said hanged head can be slid back and access 10; The combination,in a gas and coke prohad to the interior of the pipe B for cleaning dncing apparatus, of the kiln A, open at the I 5V 5 it, as set forth. top and iitted with a removable coVer,I, a pipe, f

8. lThe c0mbination,with the kiln A, of the B, for downward exhaust, and asteam-j et pipe, damper-controlled exhaust-pipe B, of pyraln- M, substantially as shown and described.

idal cross-section, set apex uppermost, and HAYDEN H. HALL. the dumping sections D D', substantially as Witnesses: l 1o shown and described. HENRY L. GOODWIN,

' 9. The co1nbination,wlith the kiln A and eX- C. SEDGWIOK. 

